$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_printf.git /var/lib/mock/f42-build-3251817-41222/root/chroot_tmpdir/scmroot/rust-uu_printf
Cloning into '/var/lib/mock/f42-build-3251817-41222/root/chroot_tmpdir/scmroot/rust-uu_printf'...
$ git fetch origin bdc608110a52344b0f5f69dff22b115bce55f6a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_printf
 * [new ref]         bdc608110a52344b0f5f69dff22b115bce55f6a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bdc6081 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild